Component 35: Heat Consumer

Specifications

Line connections
1	Fluid inlet
2	Fluid outlet
3	Extracted thermal heat

General User Input Values Physics Used Displays Example

General

You can select, whether the condensate will be extracted:

saturated, or
sub cooled, or
with a defined outlet temperature.

In Release 13 a flag FSPECP has been implemented that allows to switch between

internal pressure drop calculation (FSPECP=0) and
pressure specification from the outside (FSPECP=1).

Old models where DP12N was left blank will be converted to FSPECP=1 when loading them with Release 13 (or later version).

• the flag FT has been expanded by one option:

temperature specification from the outside (FT=-2)

The options FT=1 (“Specification of the outlet temperature as specification value T2SET“) and FT=2 (“Specification of the super cooling
as specification value DT2S2“) remain unchanged.

Old models where T2SET was left blank will be converted to FT=-2 when loading them with Release 13 (or later version).

User Input Values

FMODE	Flag for calculation mode Like in Parent Profile (Sub Profile option only) Expression =0: GLOBAL =1: Local off-design =-1: Local design
FT	Flag for temperature setting Like in Parent Profile (Sub Profile option only) Expression =1: T2=T2sat(P2)-DT2S2 =2: T2=T2SET =-2: T2 given from outside
DT2S2	Sub Cooling: temperature difference
T2SET	Specified temperature at the outlet
FSPECP	Flag for pressure handling Like in Parent Profile (Sub Profile option only) Expression =0: Calculated by DP12N =1: P2 given from outside
DP12N	Pressure loss (nominal) Note: If no specification is made for the pressure loss, then P2 can also directly be specified with component 33 (initial value) at the outlet connection
M1N	Mass flow (nominal)

The parameters marked in blue are reference quantities for the off-design mode. The actual off-design values refer to these quantities in the equations used.

Generally, all inputs that are visible are required. But, often default values are provided.

For more information on colour of the input fields and their descriptions see Edit Component\Specification values

For more information on design vs. off-design and nominal values see General\Accept Nominal values

Physics Used

Equations

All cases

F = (M1/M1N) ** 2

for GLOBAL = design, F= 1.0

DP12 = DP12N * F

P2 = P1 – DP12

M2 = M1

NCV2 = NCV1

if FT = 1, then T2 = T2S(p2)-DT2S2

if FT = 2, then T2 = T2SET

H2 = f(P2,T2)

M3 = 1.0

P3 = 0.01

H3 = (M1*H1 - M2*H2) / M3

T2 = f(P2,H2)

Component Displays

Display Option 1

Example

Click here >> Component 35 Demo << to load an example.